Machine for covering articles



. Sept. 7, 1943.

momma FOR cbvnnzfne ARTICLES A. E. USHAKOFF 2,328,695

Filegl Jun 9 1942 9 Sheets-Sheet l pt. 7, 1943. A. E. USHAKOFF 2,328,695

I MACHINE fio'n covmum ARTICLES Fiid June 9, 1942 9 Sheets-Sheet 3 Sept. 7, 1943. A. E. USHAKOFF MACHINE FOR COVERING ARTICLES 9 Sheets-Sheet 4 Filed-June 9, 1942 wil Spt. 7,1943.

9 Sheets-Shet 5 Filed June 9, 1942 1 w w 5:. w g 1 %w 1 a u 2 5 1 T 2 w 42 g z m fi & M M a 1 h P 1943- A. E. USIHAKOIFF 2,328,695

MACHINE FOR COVERING ARTICLES Filed Jun 9, 1942 9 Sheets-Sheet 7 1 25a 41 19 T5 26. A m

Sept 1943- *AVF. usHAKoFF-- 2,328,695

MACHINE FOJR COVERING ARTICLES I Filed June 9; 1942 I 9 Shets-Sheet 8 I //vv/v 7 0 F %30.

A. E. USHAKOFF MACHINE FOR COVERING ARTICLES Sept. 7, 1943.

Filed June 9, 1942 9 Sheets-Sheet 9 shrunken cover} Patented Sept. 7, 1943 AQ e w mneem ws Alexis ;E. j Ushakoi-lg-\BeverlvfiMass :assigno r to 1 United Shoe Machinery Corporation, Flemingv This invention relates to maehinsjf or severing articles and is herein illpstrated as embodied in a machine particularly adapted for use'in eov'er ing heels.

' 'Thelgeneral objeet' of theinventionis to ro vicleamacliiz'iefor rapidly covering artieles "bv the use of covers made of 'a shrinkable material. In accordance with one feature of the invention there is provided'a carrier; apmmuty-pf W6-I'k holders which are all alike, a plurality of'stations where certain operations, such as; shrinkingthe cover aboutthe article, arperi'ormed, means for producing intermittent relative movements between the earlier and "the stations to cause the stations'to be alined with'the 'woi'k-holders-ancl means for producing relative movements of re-j ciprocation in the pauses between the intermit'- tent aiming movements t ea se various opera tiens'totak'epl-ace at the same time at the various stations j 1 1 In the illustrated maehine'each work-holder picks up a heel at the firststation, places it'in a shrinkable cover at the secondstation, lowers the heel and cover into a shrinker at "the? third station, and trims 'ofi-thje surplus mate'rial from the shrunken cover at the fourth station The machine runs continuoiisly the heels and the" covers beingtpresented to themachine by "the operator at the first and the secondstations respectively;

; This anci'other features of the invention; in

eluding certain detail of construction" andcorn bination-s of partsvwill deseribed 'as embodiedin an illustrated machine and pointed out inithe appended claims. 1"

r Fig. 1 is an elevation. 01 the first position tode'scenct'ancl pickupta heel; Fig. 2 is an'j elevation of tiiesecofid Wherea he'elis placed in a eoal'erfiand the mouth of the cover is clamped to a work holderwln-th position or parts Sh0Wn, -the werk-holder oeoqpies its uppermostpositifoii: afterhaving desc'ended, to place the heel in the'eover; and rtlien riserr witli the cover clamped to the-work-holderw 2 Fig. 3 is an elevation of the third station were a cover isc'aused to shrinkabout a; heel. In the posiiton of parts shown; a 'work-hoIcler toceupies its uppermost position afteifhaiving cles encied; 't6 cause the heel-rand cover to:.:enter the shri-nking oven; and then risen With-the hehand-th 4 is: an 'elevationof foiirth station where. the swptus material is tzfimmeplofrom 'the shrunken cover; imithe positiorrfot parts shown;

ltoig N." J,:. a corporation of, NevgJei-sey j I, Aispli atgtnx unefe, 1942, Serial Ne. 44( 3,395 v 26 -C laims; 4(CL-12449111 a-weriehemer "with the heel and its shrunken cover is in itsuppermost"pcsition ready to giesen'dj" iii-vertical sectio'n dr the first station, a heel beinghovvn*as having" been'engage'd by the picker of a'ivork holder'f j i Fig. 6 is an elevation viewed'from the right of Fig; 5, sl 1 "vvirig some of the same shown in said figure;

t i Fig. 8 is a plan of thsupport for'aheelat the firststatioa; P j Fig. 9 1s aview principallyin elevation of the Second stationfafcpver beingshown into which a heel-is about tb'be lowered by" a work holder; -FigElO is a view principally;in elevation show ing more particularly the po'siti'onbf parts near the end of the downward movement of a workheider'p -& I i Fig. 11 is a detail in perspective showing more particularly one of the two cams which serve to swing out the clamping fingers; j Fig. 12 is a View similar to Fig. 10 butshowing' a work holc1lerin itslowermostiposition; Figi' I3 as: detail in elevation of the saine parts shown 'in Fi'grlr; e Figjl lfis a view prinbipally in vertical section 7 Showing a wbl k hbldef with a' hl and its OVer mer 'lfi'ris' alview similar" tof'ig'; 15 but s owing the positions' of partsafter the heel andflrnost'of thecoverihav'e been moved hp; s V

Figf l'? is a viewpartl'yfin elevation and partly in'sectiori showing the 'lower'portion of a work'- helderaiwithwheel and it's shrunken eovery i l: 'Figa'zlfl is a view prineipallyin elevation of the shrinking station with a'work-holder in its lower most position'and about to mOV8, UP;"

l9 is"=-a detai1, viewed from the right of "is a View partly in elevation arid-partly parts" as are s "af perspective of -a finished, covered ming station to release the cover;

straightening the toggle mechanisms and in turning a valve to apply suction to the interior of a cover.

Fig. 21 is a view partlyin section and partly in elevation of partof the mechanism shown in Fig. 18 but on a larger scale and taken from the opposite side of said mechanism;

Figs. 22 and 23 are details in elevation showing successive position of parts of a portion of the;

mechanism which operates to straighten the'toggle joints and to apply suction to the.interiorof a cover;

Fig. 24 is an elevation showing part of the fourth station where the cover istrimmed the parts of the mechanism of a work-holder being in position to break the toggle joints. which were straightened at the shrinking station and to cut off the suction; "1 f Fig. 25 is a view principally in verticalsection of the fourth station showing the parts in the positions which they occupy when a work-holder has reached its lowermost position at the trimming station and is about to rise and cause the severed surplus material at the upper portionof the cover tobe stripped off from thework;holder. In order not to confuse the showing in the other ,aaaaees cated during the pauses between the intermittent movements of rotation, to cause each workholder first to be moved down into cooperative relation with the station with which it is in register and then to be moved up again.

At the first station (Fig. 1), where the operator has placeda heel I80 upon a support, the work-holder descends, forcesa picker into the attaching-"face'of .the heeland'risesgthereby lifting'the'h'eel with'it. In Fig. 1 the work-holder isin register with the first station and is about to descend. Rotation of the carrier brings the work-holder with its'heel above and in register with the second station (Fig. 2). Here the operator has placed a thin-walled cover 280 with its mouthfacing upward in position to receive the heel, said'cover being made of a material which will shrink greatly when exposed to the action in proper position in thecover. and the mouth of the cover is clamped at separated pointsto figures, the stripping mechanism has been shown only in Figures25 and 28;

' Fig. 26 is an elevation of the upper part oi the machine;

Fig. 27 is a detail, principallyinsection, showin'g more particularly how the projection at the bottom of the cover is cutofi;

Fig. 28 is a detail in elevation showing how the clamping fingers are swung out at the trim- Fig. 29 is a detail principally in elevation of the two ,clutcheson the shaft which is clutched to the driving shaft; I I

Fig. 301s an elevation partly in section and partly in elevation of the lower part of the machine, showing the driving mechanism; This figure is complementary to Fig. 26, the two figures taken together being a view of the whole machine;

Fig. 31 is adetail looking down from above the machine, and-showing more particularly the mounting of. the carrier for the work-holders on spaced apart ninety degree's; and located above them are four work-holders which are caused to cooperate SllCCGSSlVGlY'JWith them. The four work-holdersare mounted on .the .outerendsof 7 each .work-holder to register with thenext succeeding station; and ,-is,intermittently reciproare mounted at ,the lower ends of hollow vertical .60 are arranged radially about a center and" are of a shrinking agent, such for example as heat. The work-holder descends to locate the heel the work-holder which then rises. In Fig; 2 the work-holder, with the mouth of the cover-200 Y clamped to it and with the heel heldin proper positionin the covezgis in its uppermost position. At the third station (Fig. 3) there is a shrinker, herein shown as an oven, having its open mouth iacing upward into which the workholder lowers the'heel and its cover,- the ;workholder pausing in its lowermost-position, as it does at all the stations, for a short interval which i may be of the-order of threeseconds'. The heat presently. softensgthe coverwhich begins .to. shrink. .Just after the work-holder starts its. I

upward movement, a partial vacuum is created in the cover and this partial;vacuum,.in conjunction with the heat, causes-the coverto'be drawn and shrunk tightly; about theheel. -In Fig. 3 the work-holder has descended into the oven and then risen-to its uppermost position,

the coverhaving been shrunk about the heel. At

the fourth station (Fig. 4)' the descent of the work-holder causes thesurplus cover material to be trimmed from the attachin'g;face of the heel and; also causes-,the smallprojection 3 390 at its bottom. tobecut ofii' This projection; in the illustrated cover is part: ofthe sprue which re sulted when the cover was molded. In Fig. 4,

the work-holder is in its upper position ready to descend; When it has descended and the trim- Referring to Fig. 26, which shows in elevation thel pperpartof th machine, the work-holders rods M, the upper ends of said' hollow rods being clamped by pinch. screws-43 iflsplit'block 45 which have sockets to receive the outer 'ends of horizontal radial-arms 41, said arms being fastened thereto "by' set screws. 'The inner ends. of the arms ,41' are faste'nedto a carrier 5| (Fig:

31) fixed to the upper end of anupright shaft 53 which, as will presently be explained-in detail, is intermittently rotated through ninety degrees and is reciprocated in the pauses'between said intermittent rotations. It 'may be noted here that the upright shaft '53 (Fig. 30) has a port 55 inits center, the lower end of which is in communication with: one end of a rubber pipe 51, the other end of which is connected to the inlet of a pump, 58; and that this port 55 at its upper end is atjall times incommunication with the centralportsdn Jthe radiall'arms'lll (Fig. 26)

a-saaoeo l 3 at the outer ends. of Wliihjzthe vertical rods 4! are mounted; The partial. vacuum; created by the pump and indicated by the gage 60, is :used,

however,1;on1y .at the shrinking station" and is rendered effective at that station by valve mechand each arm hasat-its-outer end'two alined V61:

tically spaced bearings through which are r'slidable the vertical rods-:4] at {the lower ends of which; the work holders are mounted. This spider is rotated v intermittently by mechanism which will be described later andmoyes the workreciprocated.

Referring tdrigshs, emis, the firststation and the picking up'of the heel will be described.

At this station aheel 100 is placedby. the operator upon ajstation'ary plate 'l'd' which-is slidably mounted so as to be adjustable upon a support 15 andis, held in adjusted positionfby-a set screw ll and a' lock nut 19; The support 15 is pinned to the upper end of a ro df8l vertically slidable in spaced bearing 'Z BZ in a stationary part of the machine and held from rotation by the inner end of a screw 83'which1eXtendsin'to a .vei'tical slot 'formed in the rofd8lhj' A 'stop-collar 85,ad

justably fastened in .position on the rod by a.set screw '8'l and restingtupon the lower onefo 'f the spaced gbear'ingsprovides m ans r r. adjusting the rod vertically. :OnQthe-plate .13 there is an adjustable stop or gage-f r the/packer the, lower the'form offla end of a heel, .said gagebeingi small plate 89. having, elongated [slots through which passvscrewsdl which are threaded; into the plate An adjustable ,side' gage, in the form or a smallplate 93 slidably mounted on a plate 91. and having an elongated slotis adjustably held in place by a screwfitlon tHplate Bl which is fastened to the-largerrpla'te l3 opposite side gagerds is carried-on a horizontal stem in a toned to the larger plate [13 and isifcontinually urged to move toward the side gag' e 93 as 'far as a nut I M threaded on the-stern will perrnit; f-The two Isideg'ages 93, 99';have-tlieiif=*forward work 15 may be adjusted verticallyfby'means of the adjustable collar 85; In additibmzthe positionin which the operator places the heelion the plate 13 may betvaried lengthwise oftheplate by ad justing the back. gage 89, and transversely iof the 7 plate by adjusting the sidefgage llt. .B .me ans of these adjustments. the heel may ihelocated-in proper position to receive incits attachingiface the; picker; presently to be described, of awork- The work-holders are all alike, and theone shown in Fig. 5'will' now be, described; Threaded upon the: enlarged lower end 1 of the hollow rod 4| is a sleeve Hl-l having slidabl 'gin it a plunger I03, the purpose ofwhich is to hold four clamping fingers H15; withthe toothed members I01 'attheir lower ends, in position to clamp the mouthof a cover to the work-holder at station number. two, the stems of the toothed members Hl'l beingi 'adiustably held by pinch screws I08. There :are'rour of these clamping fingers each pivoted at 109 toears'on the sleev I01 and, havingshort arms at or near their upper ends which extend through slots in the sleeve I0 I, th rounded extremities of. said arms being received in an annular groove .in the plunger "33. A spring l'l l, the lower end of which rests upon a shoulder on ga hollow member ll3,'threaded'into the lower endofthe sleeve lfl'l, normally holds the plunger. N3 in the position shown. Vertically slidable inthe hollow-rod "I: i513 small vertical rod us having in its centera smallport H1.

This rod H5 is raised and' suctibn is applied -20 through the small port at station number three, holders with it; but remains stationary when the shaft 53 and the work-holders are vertically 1 terngin, this enlargement are small compression springs 1 L) which act upon the tops of the stems of a sectional trimmer in the form of a plurality Of :blades or cutters 12!, said cutters operating at the fourthstation to trim the surplus cover material from the shrunken'cover. A picker l23, havingtwoprongs as shown in Fig. 6, is carried by a smallblock I25 whichis vertically slidable in the enlarged'lower end of the small rod H5, said blockbcing normally held by a spring l2! in its lowermost pontion, which'is' determined by a stop member carried by the enlargement; The entire construction of, the work-holders, all; of which are alike, has been describedabove, and reference hasbeen made to certain .p'operationsin which the work-holders take part at succeeding static-new At' the first station a the whole work-holder is reciprocated, but there is no separate movement of any of its parts. except tl iat the picker l23; rnay yield somewhat it necessary against the force: of the spring qlZ'l, the spring. llltbeing stronger than thespring I21. At the first station, then, the work-holder descendsto force the points of the picker intothe heel,-as shown in Figs. 5 and 6, andthen rises carrying the heelwith it;

Referring; now to Figures .9 to 13, there is shownl the wcond station and the ina'nnerfih which asworbholder places a heel in a cover. Thebperator placesthexbottomwof a cover 200 in aholderl-t-fis in the'form ofa sort of. shallow cup having in its bottom anyo-pening toreceive tlie small projection 13638; said holder being iiitegral with a plate [3i which is slid'ably'ad'justable in a dovetailed slot in a support 1'33 and is heldin adjustedposition byza set screw F35. The

supportglt 'i is fast to the upper end ofa rod l3 whichflis vertically 'slidable inalinedj bearings l 39. The rod isgheld from rotation-lama set screw HI threadedthrougha;wall oithe upper bearing, the end ofzjsaid set screw extending into a vertical slot. 143 in the rod; and-the rod may be adjusted vertically by changing the position upon :it ofa collar hidheldin place by a set screw l 4?, said 7 collar resting upon the lower bearing. :39. The

rod t3? isgso held fromturning by thESEt CSCI'GW l4! that the plate I3! extends in the same gen- .eral direction as: that of the path rotrotati'rni Loloat ed above the Support. for the cover;

stationary member- Itfifhaving the shapeiof a segment of a hollo'w cylinder into which'the' workholder rlcscendsfsaid}, member being supported bylthe frameof the machine. The purpose of .this'inember is. to support .c'amswhich; during the descent of the work-holder,'cause :the'clam'ping fingers liifiito swing to cpeni positiomas shown in Fig. 10, and thenxpermit'the-fingers to closeupon the cover,"as'shown in Fig. 12, andit'o remain in. closed position .vs'ihen'v thework hold'er risesj .There are twoi'ofthese cams located'lBO" apartwhich act upon two diametrically opposite clampingifingers; and adjaeent each .caines' well as in the back'part of the wall of the member I49 there is a Vertical slot or opening't'o' permit the Referring more particularly-to Figg 21-1geach cam comp-rises ablock II having an incline'dicam surface E53. This block is integral with a stem I55 which is fast to a small rockshaft I51 mounte ediin' spaced ears onthe hollow member i lQjand is urgedat all times to occupy thefpositio'n shown by'a spring' I59, the' iniddl'e part of the-"spring being coiled about the rockshaft ISIgand the two ends engaging respectively thewall'of the-hollow cylinder and a pin l5! which is carried'by a small arm I52 fast to the rocksha-ft; In this'po'sition; a locality on the under sideof thestem I55 is held-against the rim of thehollow'member M9, and the cam cannot swing down. Above the cam surface I53 there is shown the lower end of a clamping finger I E25, said finger carrying two ver should be' n'oted that'theheelfstill engaged by the picker I23 (Fig-'5), is h'eld'a'bove the bottom of the covenfit being desirable that'the heel should be'so held independently'of the "cover during the'subsequent shrinking operation.

l lollow member I48 is open at the' front, that is, when viewed-as in Figs. 9', l0,-12 and 1'3, to 'permit the operator to place a'cover 298 on its sup port I29. 1 t

Referring now to'FigsQl i to 1'7; the shrinking station andwhat takes place there will be de-' scribed. Fig; 14 shows, principally injvertical section and at right anglesto the showing iri Fig. 12, the lower portion of a work holder and the positions which its parts occupy when-a heel has been properly located in the cover, and the work-holder has been raised and brought into V position above the third station where the slirinkw ing of the coveri's' to take-place! Figs; 15t0-17 showwhat happens at this thirdistation. The work-holder with its heel and coverflis lowered into a shrink'er in the form of an open-mouthed oven I65 which is heated to a suitable'temperature, which may be in the neighborhood of 800? F., by resistance coils I61, Itlthis'temperature depending upon the thickness of the 'cover and the material of Which it is made. I The current supplied to the coil I 61 may be varied'by turning the control member"I'II ."(Fig. 18) 'of ajvariable autotransformer (not shown) a second trans} former" (also not shown) the rotatable control member of which is indicated at I13, being protically'spaced small pins I 63." When'the Work holder with its heel I59 descends, these pins,one after the other, engage the inclined cam'surface I53. and the finger- N is swung to open position and remains in open position until the uppermost pin has slid down the incline and'entirely 01f from the 1blocl I5L By this time the heel I00 has ben properly located in the cover 220, as shown in Fig. 12, and the finger I05 is swung in by the spring III and plunger It? '(shown in Fig 5) to clamp a'portion of the'mou'th of the cover to the sleeve StI of the work-holder (Fig. 12). When the work-holderrises, ,carrying theclamping fingers I as with it, such upward'movement is permitted without'disturbing the clamping position ofthe clamping fingers since thesmall hori-' zontalpins I53 of the fingers engage the under side of the cam blocks I 5| '(Fig. 13) and swing them up out of the wayagainst the force of the springs'lefl. I

One of the intermittent movements of rotation of the carrier brings a work-holder with= aheel are swungout, but return to their normal positions as soon as the pins Hit-on 'theclamping fingersI'BE haveceased to engage the cams. It

vided for the coil 163.. The work-holder de-' scends into the positionlshown in Fig. 15. During the pause which occurs when" the carrier is in this position, the'heatsoftens the cover and the cover begins to shrinkg" Itisimpossible state exactly the .extentjofthe ;s hrinl ing,jbut probably the cover shrinks to thef'extentjshown in Fig. 15, the bottom of the obver' being' drawn up firmlyag'ainst the bottom of'the' heeL. In order to permit the .cover to conformto the concave surfaces of the heel as well as to, aid it in so. doing and to permitjpart ,ofit to be drawn over the margin ofthe. attachiiig' face of the heel, the heel; is lifted a shortfdistance with respectv to the adverse astoprOduceQa slack in I the walls of the cover, and at'ithe sa'rnetimea partial vacuum is produced in the, coverso as .to assist the shrinkinginconforming the cover to t heel. Fig. 16Ishowsthe heel lifted. and the walls of ,the cover slack or loose. The heat and thepartial'vacuum-now act to conform the coverto the heelas shown in Fig. i'lya portion of the .wall of the fcover'having been drawn in a sort of'loop over the attaching face of the-heel.

The-heel is lifted from the. positionshownin' Figs. 14 and 15 tothatgshown in Figszlfi'and 1'7- the mouth of the cover is clamped at separated localities; but the instant the :cover shrinks closely about'fl the lower end' of the sleeveslnl, a considerable partial vacuum is formed i'n'the cover. F

"Referring now more particularly toFigs. 1'8

to 24, the-mannrin which the heel is lifted; and suction applied to th'eiht'erior of thecover will surracepi the block. It is raised so as to pun up. the rod'l l5, and thereby pull the heel up with respect to thesleeve Ill] of the work-holder, durmg the first part" of the-upward movement of the carrier 5li (Fig. 31): from itslowermost position,

this 'pullingnp of the rod H5 in its hollow rod {l I being brought. about; as V has been stated, by holding the'slideI-rod IQLstatiOnary for fa short interval during the upward movementof the To this end the man elongatedblocli has rotatablymountej'd on a small horizontal spindle 1 2] which passeslthrough the block and projects fromi'either endfarj dthese projecting ends are supported espe uve iy by tw o tog'gle joints, one on each'si'de'of the block 45. Referring nowrto Ffig 241,.Whih I shows thebpposit side o'f thefrne'chajnism from that. shown in Fig. 18, theprof jecting' end of "thespindlejfl extends throuigha slotin an upper'ftoggl'e leve1x;229, the position of thefpend of the spindle in the .slot' beingca'pablc I of being varie'dby turning an adjustingfscrew 23}. QA nut'2 3 2 is provided for locking the-screw i i:- 1 osition. The mechanism about to. be de;

scribed is di'iplicated at the other end of the spindle rinses appears 'in Fig. 18. Referring a ain to Fig; 24', 't hefupper toggle lever 229.,islslid ablyf received in a forked meniber 233 through the upper closedgend of which the screw 23f is th s 1123! has a portion of reduced dianiete'r whioh extends through the upper portion/of the togglellever' 229 I intoi the slot therein} andon the lower end of the "stem of'fth screw isjfas si e. or the horizontal i spindle 22,1. In, contact with the'lo'wer side: of this spindle .is'a pin .231 whi h is carrie'd at th'elow er ends of the armsfof th forkedjmemberi 233.,v The lower end of. the

24mm, the uppe r'j'end of a lower; toggle rnember' 2 30; which is pivoted about'ja pin 2'4I carried by a;link"245'to pushlthe pi vot'239 to therigh't.. This link is pushed to the right by the downwardly eXtending-arni of a 'bell'cranlg lever 241, lithe hub offw'hichis pinned to: thesmall rocksha'ft I85; the lower end -o'flfthe verticaluarm' of thebellprank lever-being pivoted at 249m one en'd"of the link,245; 1Referringnow to Fig,""l8; ,Which "shows the other end of the srnall rockshaft" N5,

' cod; Referring to "Fig. 19, the stern of "the p'ortll'l and to'lower the-ro'd'll5. V e

f At this trimming station ,.fthere is fa'sup'port ZBI .(Fig'. 25) for the covered heel, said support avingdownwardly extending hollow stem' 263 slidablymounted in spaced bearings formedme;

there is fast to that end of said shaft the hubfof a bell-crank lever 25f, thef substantially hfori- "zon'tal arm of which is swung down by the; action iupon' it ,of thepin 189 'when th'e slide rod] I'Sljis held stationaryand the carrierfil forth'e'blofcks 4.5 moves'up; .Whenthis occurs, the'in 1-ted1oa ed were I est-re q kw v ed nF -c; a ha b n a e o rn he Valve-115w hsn n o t on 5 WI1;i' f F g-;Z L and;at the sarne time the substantiallyhorizontal arrn ofthebellicrank lever 25 I (Fig. 18 is swung down o th ma shaft laiclq kw s s has "be si te a v e iq sm m how Fi --24; is ,ciuplicatd 9. th h d @i t eb fitt duelieaie me han m s shown in Fig. 173, and-the partsa e indicatedby atam rez e iniim a srwej aFi 24 but I ia y hq l' n l-a te 9 ihel h lr l? e er 5.. iatwunadewa .1101; lr is the onal ha 5, I gocked but thedownwardlylextending ar this bell-crank l ever 25! is swun g to th'e left .(Fig.'l E}) andcofnsequentlyQ the link 545 is' caused to t a t n t I v v 4 time thatithe .l1nk 2Q-5 ,(Fig; 24), by the swinging of the hen-crank lever? 241', straightns the tug; gle lev'ers i'29, 240. The horizontal arm of the bell-crank lever 2 -(Fi'g."2&)"has a horizontal slotto receive jpm 25am theupperend of a vertical :slid'e rod255 which is rnounte'd,"like' the slide 'rod I91; for vertical sliding movement in bearings in the spider 59. Referring again to Fig: 18, the downwardly .eiitending' arm of the bell-- cranhleve'rffi'lf'is provided with a small curved slott'o receive a' pin 2,5Tcar'ried by theblocki45, the pin serving 'as astoptdlirni'tftlie extent of swinging movement of the downwardly exte'nd-' ingafm o .c. v v, i v V. It.Wi11 b (Fig? 21), the lowermost position of the rod '1 15 with respect to the hollow rod 4 I, and hence (Fig 14) the distance below theis'leeve lill. of the work holder'atwhichflthe heel is held," may be varied; and, that, by turning the adjusting screws23l, 53f (Figs. 2. and 1'8), its'uppermost position maybe varied. ffItiwill be noted that ther'e'is a limit to jthepossible upward position pleted thecarrierisfrotat ed to move" the work- H A holder intoja'position labov'e' 'the'trimming sta-' tenedfeaTcollar 235 'which rests upon the 111 1 6 f tion andfthere moved down to'trim the surplus niaterial from the'iattaching face of the heel and i (Fig- BDfnot pmy'accomplishes the z results vjust named but 'also'turns the valve I15 {Fig. 21) to closed position 'toshut ofi the suction and breaks thefltogglejoints, as shown in, Fig.

trimming stationjwith whiclithe 1 w ends of the 'slide rods I81", 255 contact when the-head is moved down.- In said figurethe head has reached t its lowermost position, and therods [9], 255 have been pushedup to cut-off the suction'from' the e asting26 lfisaid stembeing continually urged upward by acornpression spring 265 as far asan adjustable collar 216T jwill permit and being'held fromirotation by a screw 259 which isthreaded ggl'e' levers 529, 'Fi iil at the'sahie.

hated that; by turning'the' nut 223 TAftehthe shrinkingf operation has been comtrelcY ndrica1 sa h t in h hi ;vert callmlicls eblea small perforated bleekimsuppoytedlby a spring} Zifij Tp epposite sidesef the block, are fastened, the stems bttwq cutting members 511 (If thin spri ig steelfheving their upper ends teward each ether to provigle-copperatiqg blades he ne u ieeeeeew edges h e moment apar as. S wn, Nithe .ne ;t e Terrie withtit heeltell and shrue e' i, ta er 200, ismpv d ewrt the, smell pteie ti n. .3.60: e rs e e t he spaeedietlges of. the members 2.", and luponl. 11131 p it." n s1) v11; inlf'ie; 25; he edge qij-l. the cu t n me belts r te fi fier t me l. proje i0 1 .3160. w en falls. th h. the heiiow tem; Whenthe heel is press d aga n t the "neon 2.5.1., a shewni ig zfil not on xis he smell preie'ction 31%. cut e i tt e eries otgutters i2! trim the.siirplusfmeteriebfrom the attaching fetce bf .thebeel by cutting. thrqugh two, thicknesses of "sever materiel It Vii-11 be noted that each cutter is indepehdently, yieldable sq that the se'ctienal cutter; can .aectimtriodztte itseli to the]edntoupoif.thtnttaetiing face oi the heel, At this station, toe; the clamping fingers r w n cut to ineeere iv p s ion. o t of en.

tact with the coil, tl immed off. To T shaped member; 2'39 I of: the m positignxth the lewer end of. the carrier passes t g the. ring; 'sa-idfl' ine bein pmvmeewentvy'g) izgcliqed calms, one" of wlqieh is ,ihdicateiat 282;; which 'engeg'etii'e 1 v r Q l 0f the 1 W? Smal materiel fl es. been: 5 end? 1 generally. ring, e... 28) is fa'stened.,t j..the

heel,- Du ing the first partloftbeupwaxmmm 7 re ent of th efvvjorkhdlderthe u p es-co er. met 5:

slee /emit is mel nted ferverticals1. iw.1i1 1.g,move:

sliding sleeve. being: norma11y he1q' up irithe. 2.0 eitieh; shuwn by lewerend oftbis sptieg ests upjoii" tw'o dittmetri rojections which are; rigid. with the sleeve 1M a d e ten :throue11.;verti a1 slots in the sliding "sleeve 285; (me be ingkhowh at 293-. These project-ioz'is also aet'ias c'ani s in that their outer ends run 'on' a cam face on; sheen later 'td bedescribed; The upper end of, the

spring zeil engages the -under side of an annulr flange or fiat ring 2% which jisrigidtvith the sliding sleeve 286-. The sliding-sleeve is'tblishel'di at all times, statienary with respect tel the sleeve wt'gexcept atthe trimming-station; In order to cause theesliding sleeve ZEBSQtQbeheld; {of

an interval at the trimming staticin while -'-*t1'i sleeve HM isji ising' thus to cause-{the sliding sleeve 285170 strip off the t; r devmwaiimovement lithe Carriertq the" by'i'serew e ts. 281.121 seen.

. the Work-x holder bylthe 'foijlewing mechanism ifi ripii j severed ortion-of the coverfififlwhicli has been. shrimk about the lower and of the sleeve; 1M, two latches, one .of which is. indicated at 2-92.; areprovided', These. latches are. .meunted at diametrically opposite. points. on

5 the; ring 2.39.. .Ea-chlatch. has a'lnotch te receive the.I'ifigiBfimllwthB. Sliding-Sleeve 23.6; when the latch permitted, esis shown in the figure, to eeeup y its. ;ope ative p sition, aYld- WhBIL the is. .helsiui em movement endL will strip off the rp ust eterial. oiJthe-cever when the wen;- holder-,. wi h. t e. sleeve it I: is;,r.ais,efi'-. .niejtwe let-th end' he enner in Which-th y are. meunte a q e. and on quently. only (me will be d r eeem Thele eh istivoted at itsflewer end at fi l 'betweems l e rs:ee ftiefl by the rin 2f nda. -s ielt mite. m s latehvt sailing toward thesligling; sleeve 235,? 31s: spring is. wqunt ab ut t e t -0t 21%,. nga in teemin Z-ts, and the, er-en cl being bent around the has of t-he latch 2M2 Ti1e. front. ojgthetlatch Hittite edge of the latch which conironts the lidingzsleevefiafi) iStfQI'liiECLflSLE cam face,,the hi hest leeality on this face being the loca ity .25 Where the mom isllo cetedsto.reeeive tberingor 'tion 296 erilthe sleeve itlglges a curvecL-eutet-encl which en g s t e w -fete 5%?- on thefr nt eeee of, the leteli, seidt outeregxi being; toelerge tome .30 iteq'eivedi in.- trie noteheirithe latch. Whengthe Wdrkholcler m'ofVes down, the clamping fingers m5, are swunejout .b t'the eats-1s. 1&2; ig. eat, arse. durin his. nw'ardwmoyement; lillfl lglow jeetie'nsj, 2901 1i. the sieev e. ifllii" ride dqvqn' the cam 35 fa es on the ei'ees pfthe letehes, with the; result thatthela'tches are first swung out into: keeper ative ositior s. and then as. theproieetions 290 approach thelewr ends, at; the cam. faces, are

th i thls time the. sf ltpiusk mateliia l 01f heleeelifcqver has been severe and the-parts arein; thebositiens shown in mguiesl'zt es 28; When now the' WOI'l bold rises, the. sliqipg sleeve EW-iislgelld stetioneryjor aniiritervalvend heel: covet, {After thestri pm off or. the. surplus material, further up ila td movei nent ef. thefworkfi earlier-first causes the. m'qjeetitmsYMilI n swfieg tlie latchesouttq itiegerative. pcvsitior triii. lete eermitsfthe' clamping fingers 10.51 to twine: heel;

into theirhezmatpesitiehs, esshown for exampl during th epau s es beti een ,thejilritermittent"movements of rotatiprijwilt'be deseribed. The hub-oi the smell shaft 5H5 ede e e m shaft zeaitemgf Mammy-mou t d 1m anemones-te ming sleeve 2'84; The'uppet end. efthe sleeve. is;v integrel with theplate flfl which as hasjbeen stated} is bolteq to the top 0f the: frame' and upon the" upper. end of the sleeve rests the hub ufthel'spidee 59. To the lower nd of the shaft 283. (t'ig so) is fas; tene'd the hql'l'ow hub 9f .3, largegea k. 2.85.. This large *geer meshes witha small gear leose upen but maybe connected: we. centir u ous i t tin ubrigtt s h alft 239,752 11 shaft ex; tending tb the bottp'm of the machine and i being rj'etet'ably mounted in'spece'd. beatings Z91. carried bythe-frameof-the machine? The shaft 289 has fast to its lower end a large gear 293 which meshes with a small gear 295 on an upright shaft 291, said shaft having fast toit aworm gear 299 which meshesiwith a worm 391 on a horizontal shaft 393, said last-named. shaft being driven through a friction clutch by an' alined, horizontal tdrivin shafti395 which is rotated 'by a belt 351 from :a pulley 399 to which power is applied continuously from a suitable source.

Referring now to Fig. 29, the driving shaft 305 r carries at its left-hand'end one member 311 or a friction clutch, 'theother-member 312 beingcar ried by the shaft 393. A compression spring 394 normallyholds the members of the clutch in engagement, as shown. The clutch may be disrockshaft, the upper end of the arm having a fork carrying small rolls, one being shown at 321,

which run in an annular groove formed in the hub of the conical member 312 of the friction clutch. With this construction depressingythe treadle 3| 3, by rocking the" arm 326 counterclockwise about the axis of the rockshaft 323, will disconnect the clutch.- The treadle may be locked in lowered position by swinging in a counterclockwise direction a small bell-crank lever 329 (Fig. 30)' which is pivoted at 331 to the frame of the machine.

When the machine is thus at rest, it is sometimes convenient to be able to rotate the shaft 393 by hand, and to this end the'following mechanism is provided. Referring first to" Fig. 29, a downwardly extending arm325, the hub of'which is fastenedto the near end of the rockshaft323, is pivoted at its lower end to a long link 333, the other end of which is slidable through a sleeve in the lower end of asecon'd clutch-shiftingarm 335 having'at its upper end aforl; provided with small rolls, one being shown atv .331, which run in an annular groove in the hub of a smallsp iral gear 339. The arm 335 is fulcrummed about a sta tionary pin'34l, and, the link 333, is-continually urged to the left by a'compression spring 343; The hub of the small gear 339, which is looseon the shaft 393, has small projections or ribs .345, spaced apart 90 "(Fig '33)fwhichmay be received insimilarly arrangedrecesses, one being shown at 341 (Fig. 29), formed in a collarw 349iwhich is fastened on the reduced. end of the"shaft-393. lt will'beevident that when thetreadle 313 (Fig. 30) is raised, so that thej'clutch members 311-, 312 are in engagement and the shaft 393 isbeing rotated, the small gear339is not rOtativelyconnected to'the shaft; 1 but when theltreadle is depressed, to disconnect-the clutclrmeinbers 3H, 312, the small gear 339 is rotatively connected to the shaft 393. In order .to be able to,--turn ;this gear by hand, a hand crank35l (Fig.30) isprovided. The hubvo'f this crank, is fast to the outer end of a small horizontal shaft 353 which is rotatable in a bearing carried by the frarne of the machine, the inner end, of g the shaft having fast toit a spiral pinion 355 which'meshes with a small spiral gear 351 fastened to the upper endofan obliquely extending rotary shaft359to; the lower end of which is fastened a small spiral pinion 3 l which meshes with the spiralgear 339. Thus when the treadle 3| 3 is held down so that no power'is being applied to the shaft 303, said shaft may be rotated by hand. 7

i Th mechanism which has just'been described serves to rotate the upright shaft 289 (Fig.

continuously 'when the treadle is in raised posi tion; and rotation of this shaft, through mechanism which will now be described, is caused to rotate the hollow shaft 283 "intermittently through ninety degrees, thereby causing 'inter-" these twomembers being alternately connected to the rotating shaft 289. The gear 281 is held 1 from downward movement on the shaft by a collar 355 which is pinned to the shaft and by the bearing 29l upon which the hub of the gear rests. This gear has integral with it a downwardly extending sleeve 3671, having fast to its lower end the upper member 369 of a clutch, the lower member of which is a spool 313 which is splined to the shaft and therefore rotates with it and can bemoved'longitudinally of the shaft. The upper clutch member 359 has recesses on its under side spaced apart, one being shown at 315, in which may be received similarly arranged ribs 311 formed on the upper side of the spool 313. The spool 313 i shown as occupying its lowermost position in which the clutch members are not connected and the small gear 281 is not being rotated; The barrel cam 363, which is held from longitudinal movement between two of the spaced bearings 29!, has a downwardly extending sleeve to which is splined for vertical sliding movement a second spool 319 which forms the upper member of a second clutch, the lower-member 38! of which is pinned to the shaft 289. The spool 319 has on its under side projections or ribs spaced 90 apart, one being shown at 3,83, which may be received in similarly arranged recesses formedjiinthe upper side of the lower clutch member 38!. In th position of parts shown, the V two' clutch'members' are in engagement, and the small upright shaft 53, at the upper end of which the work-holders are supported, is about to be the other end of which is fast to the far end of a small .rockshaft381 mounted in a stationary bearing in the frame. On the near end-of the rockshaft is fastened one end of a long arm-389 to, the other end of which is pivoted the lower end of an upright link 39l the upper end of which is-pivoted to one end of an arm 393, said arm being pivoted at its other end at 395 to the frameof'the machine. The arm 393 has a fork carrying two small rolls which run in a horizontal lot391 in a collar 399, said collar being fast tolthe lower end of the small reciprocable upright shaft 53.

2,328,695 1 Turning now to the two clutch spools 313, 319,

the mechanism for moving them in unison'up and down at intervals will be described. The upperspool 313 is carried by small rolls which extend into the annular groove in the spool, said rolls being carried by the branches of aforked arm 40l, the hub of which is slidable-along the axis of a small upright shaft 403 having fast to its lower end a gear 405 which is driven by a gear 401 of one-half the diameter of the gear 405, said gear 401 being fast to the upright shaft 289. The hub of the horizontal arm .40l has upon its upper side a small cam block 409 adjustably fastened to it by means of a set screw 410 which engages a downwardly projectingsleeve of the block. The arm M", with its cam block 409, is urged continually upward by a compression spring 4 H which rests upon one of the spaced bearings of the shaft 403. Pinned to the shaft above the cam block 409 is a cam 4|3 against the underside of which the cam block 409 is held. In the angularposition shown of the cam4l3, the camter with the next succeeding stations, and to repeat these movements; The operator presents heels to the first station and shrinkable covers to the second station. The work-holders in succession pickup a heel at. the first station, place it. in a cover at the second station, lower the heel with its cover into the shrinker at the third station' and trim the surplus material from the upper part of the cover. as Well as cause the projection at the bottom of the cover to be cut off atthe fourth station. At thislast station an attendant removes the covered heels; s

In Fig. 132. there is shownpart of a modified machine which is like the machine described aboyeexcept that theportsl 11 in the radial arms 41 are at all times in communication with'the ports; Ill intheasmallupright rods H5. The construction shown-inFig. 32 is like that shown in- F .2,l except that, the valve. I15 .of Fig. 21 and the mecljianism, for operating. it are not present,

block 409 is being held down by the cam 4l3.

The arm MI is, therefore, being held down and the small gear 291 is not turning. By the time that the upright shaft 403 has finished half a revolution, the cam 4| 3 will be in an angular position to permit the spring 4 to push up the arm 40! and therebyconnect the small gear 281' to the upright rotating shaft 289. The lower spool 319 is carried by a forked arm 4I5 like the forked arm 40| which carries the upper spool 313. The hub of the arm M5 is mounted for vertical sliding movement like theiarm 40[ and has fastto it on its underside a cam block 4", the hub of the arm 4| 5 with its cam block being continuously urged downward by a corn-pression spring 4|9 so as to hold the cam fbl0ok4l 1 in contact with a cam 4ZI which is pinned to the upright shaft 403 and rotates with it. The cam block 4Hv and the cam 42!, like the cam block 409 and its cooperating cam 4| 3, have complementally shaped adjacent, faces. A With theparts in the positions shownjthe' cam block 4I'T,"and' with it the arm 4| 5, has beenpushed down to its lower position so. that the spool 319 has connected the barrel cam 363 with the rotating shaft 289.

Assuming that the parts are shown in the positions which they occupy when the small gear 28! has just been disconnected from the shaft and the barrel earn 363 has just been connected with said shaft, the rotation of the barrel cam will continue until it has completed one revolution. This will wing the lever 389 down and then up, the cam track being so shaped that there is a short dwell when the lever has swung to its lowest position. The small upright shaft 403 will then have completed a half revolution, at which time the lower cam 42l will push up the lower arm M5 to disconnect the barrel cam 363 from the rotating shaft 289, and theupper cam 4l3 will permit the spring 4 to push the arm 401 up to connect the gear 281 with the shaft 299 whereupon the large gear 285 will be rotated a quarter revolution. The arms 40 I, 4 l 5 will then be pushed down tothepositions shown to disconnect the gear28land' to cause another rotation of the barrel cam. 1 v I With the treadle 313 (Fig. 30).in-raised .position, the machine runs. continuously to. cause the work-holders to descend into cooperativerelation each with one; of the stations; then to dwell for a.

short interval in their lowermost positions, then to rise, thento be'rrotatedithrough 90fiinto regis,-.

thep0rt l 'l'lbeing at. all timesinicommunication with-the port H'Lthrough v,the.,l"lexible "tube. l'lli." In case the construction shown in Fig.32 is em.-

ployed-,;t;he suction is effective to produce a par-' tial vacuum in thecover only atthe shrinking station; the capacity of the pump58 being suifi cient to produce thegdesiredpartial V'acuiimde-- spite the] fact that the QOItSbiIl-Tthfl otherithree.

rods at the other three stations are. open :to the amosphere. The operation .of themddified machine is the same as that of the machine first described above, except that; air is being sucked at all times through all, the air conduits.

Although the invention has been set forth as embodied in a machine in whichrfour operations are performedupon each article, it should be understood that the invention 3 is not limited in.

thegs cope of its application to the particular machine which has been shown and described nor to the performance of all of the operations.

, In application for Letters Patent ofthe United States, Serial .No. 398,773, filed. June 19, 1941, in my name, there is disclosed. a machine. forshrinking a cover upon anarticle, and all subject matter common to the prior application and to the present one is claimed in said prior applica- 1 tion. i

Having thus described the invention, what I claim as new and desire to secure by Letters Pat ent of the United States is:

.1. A machine'for'covering an article, said ma- ,tial vacuum in the cover, and mechanical means for moving the article-engagingmeans toward 1 the rest of the work-holder, said la'st-named-two means acting during the shrinking of the cover.

' 2. A machine for covering an article, said machine having in combination a work-holder having means for clamping to it the mouth of a.

shrinkable cover containing an article and means for engaging-the article, a shrinker, means for causing relative movement of approach between ,the shrinker and thework-holder to cause the cover'to be shrunk, and means acting throughthe article-engaging member for moving the articlezaway' from the bottom and toward the mouth of the cover. r

; 13 A machine for covering an article, said'machinehaving in: combination a work-holder having meansfor clampingnto it the mouth of a shrinkablecover containing an article and means' for engaging the article, a shrinker, means for causing, relative movement of approach between the shrinker and the work-holder to cause the cover. tobe shrunk, means acting through the article-engaging member for moving the article away-from the bottom andtoward the mouth-of. the cover, and other means-for creating-apart tial vacuumin. the cover. r .1

4. A machine for covering an article, said-machine: having in combination a carrier, a plurality of work-holders supported in spaced relation by said. carrier,. ..said work-holders having-means forengagingan article and means for clampingthe; mouth of a shrinkable cover to theworkholder, a plurality of .stations arranged in the- 7 same spaced. relation as are the work-holders, said-stations including a shrinking stationpro vided' with a; shrinking agentand means for producing'in'termittent relative movements between the. carrieriza'nd the stations-to cause the workholders :to bealinedwsuccessively with the 'sta tions' .and for producing relative movements of reciprocation. during the pauses between the said intermittent alining movements, and means acting;on ly:at the shrinking station to create a partial vacuum in the cover. 1

-,- 5. .Amachinerfor covering an article; said ma chine having in combination a carrier, a plu-' ralityof work-holders supported in spaced relation by .saidcarrier, said work-holders having means for engaging an article and means for clamping the mouth of alshrinkable cover to the Work-holder, aplurality-of stations arranged in the same spaced relation as are the work-holders;

. said stations including a shrinkingstation'provided; witlr.ashrinking agent; and means for producingintermittent relative movements be-' 40 tween .the carrier. and the stations to cause the Work holders to be alined successively withthe stations and fol-producing relativemovenients of reciprocation. during the pauses between the i said 5 intermittentalining. movements, and means 45 work-holders, said; stations including a shrinkwork-holders, said stations including a. shrinking station; means for producing intermittent 'rela-i' tive' movements of. rotation between: the carrier and the-stations to cause the woi ki-holdersT-toi be alined successively with the 'stations and-don producing. relative movements of reciprocation during the pauses: between: the intermittent =alin.-1 ingmovements 'of* rotation; mechanism becoming operative. at the shrinking. station f'cr :moving: said article-engaging; member with respect .tO; theirest of; the work-holden of-Lw-hi-chit forms-:a part and means for aoljustab'ly varyingthe'limitsf of rnovernent of said article-engaging: member; 8, A machine .for coveringan article,v said ma chine havingirr combination a, carrier; aplurality of work-holders supported; {ini spacedirela tion by. said carrien-said work-l olgierscachin eluding ain article-engaging member movable with respecttothe rest of thework-holder, a plug raiity ofstations arranged in thesan ie spaoed n ad ns shriek n s at cs mean r.;p dw sie erm t enirelat ve,rm em e sjb wesni t ri and th WfiQ iMQQ W th W es-r holders to be alined s'ucces sively vlith t he sta tionsand for producing relative movements of. reciprocation during; the pauses Between the termittent aliiiing movem n 's, toggle. rnechanis'r'ns, one-for each work-holder, ream ingiandi lowering said article-engaginglfnemhers with re: sp'ect toIthe-rest of their respective work-holders} s'aidftoggle mechanisms being broken and the article-engaging members in their lo er positions. as the work h'olders ,ap'pro'ach .aline'ment with the shrinking" station, afidjmans operated by the} mg statiorn. means for producing intermittent N relativamovements of rotation between the car rier and the stations to cause the. work-holders to; be alined successively with the stations and for p ifc du cing relative movements. of reciprocation during the pauses between the intermittent alining movements of rotation, and mechanism becomingoperative at the shrinking station, for moving said article-engagingmember with respectto therest. of the work-holder of which it. formsa part. i p

7. A nachiiie ior. cove ing an article, said.v machine having in combination a carrier, a plu-- rality oi work-holders arranged radially about, and supported in spaced relation by said carrier; said rk-holders including an article-engagingmember movable with respect to the rest of the work-holder, a plurality of stations arranged in the same radial and spaced relation as are the relative movement of reciprocation between the: carrier and the stations for straigntemfi me toggle oithe. Worknfidel Which isat the shrink? ings'tati'on.

'ei A machine for covering an article, said machine having in combination azea'rrier, a plea-i rality of work-holders supported in' s aced relaftioni' by 'said carrier, said wo rk holders each. in;

cluding an article-engaging member [movable with respect to the rest of the Work holdena; plurality of j stations arranged in .the same] spaced relation as are the work-'holdersjsaid stations in cludirfg ashrinking station. nean'sfo'r producing a interrmjttent relative movement's 'U8l1WQ8Il/ the carrier and the stations toj'c'ause' the work hold i a tqbei in d 'su'c ess .wii r l st t n' and forproducing relativev movements gfreciprog cation'j during the pauses between thef intermi tent alining movements; said work hfolders each? having" aport'leadirig tofits 'wormenfgag'irig wer for. admitting suction to said portsg said valves being closed as thework holdersapproack the shrinking stati6n-; *and 'nieans-opratedWy'j the relative movement of between .the'cariier and the stations for openin'g 'the' valve; f

attheshrinking giants; M

llmm e o lqgver ns a a ic eaid? machine having i n combinatiiiri'a carrierpa plu ral-i'tyfof w ir-namesseasoned n spaced re1a tion" by; the-*carrier; -said-work-holdershaving m'eans for engaging an article means "for" clamping the inouth' or ashrinkable cover to the work h'olders'; a' plurality of 4 stations including i a station at which the article is l'de'a'te mpel-1 iin' a-cover 'and az shrinkingstation, and means for producingintermittent relativemovements between the WOik-H'lilldlsfifld th' '"stationsto cause the work holders to be aiiried su'ccessiveiy' with =the stations andfor producing relative l'movem'ents' of reciprocation during the auses be: l

machine having in combination a carrier, a plurality of work-holders supported in spaced relation by the carrier, said work-holders having means for engaging an article and means for clamping the mouth of a shrinkable cover to the work-holders, a plurality of stations including a station at which the article is located properly in a cover and a Shrinking station, andmeans for producing intermittent relative movements between the work-holders and the stations to cause the work-holders to be alined successively with the stations and for producing relative movements of reciprocation during the pauses between the intermittent aligning movements, said means comprising a hollow rotary shaft, a rod slidable in the hollow shaft, a constantly rotating shaft, and means for connecting the hollow shaft alternately first with the hollow shaft and then withthe reciprocable rod.

12. A machine for covering an article, said" tions to cause the work-holders to be alined suc-; cessively with the stations and for producing relativemovements of reciprocation during the pauses between the intermittent alining movements, said means comprising a hollow rotary shaft, a rod sildable in the hollow shaft, a constantly rotating shaft, a gear onsaid constantlyrotating shaft which may be connected to and" disconnected from said shaft, a gear on the hollow shaft meshing with the gear on the constantly rotating shaft, a camon the constantly rotating shaft which may be connected to and disconnected from said constantly rotating shaft, reciprocating mechanism for the rod operated by rotation of the cam and means forconnecting alternately first the gear and then the cam with the constantly rotating shaft.

13. A machine adapted to turn the surplus material from the upper portion of a cover which has been shrunk about an article, said machine having incombination a work-holder, a trimming cutter comprising independently yieldable sec tions, a support for the covered article, and means for producing relative movement of approach between the work-holder and the sup.

port.

14. A machine adapted to cut off from the bottom of a cover, which has been shrunk about an article, a small projection, said machine having 15. A machine having in combinationa member forholding an'article about which and about one end of the member a cover has been shrunk, means for severing the cover whereby surplus material remains on the member, and means for engaging the edge of the severed surplus mate-- rial and stripping it from the member. 1

16. A machine for covering an article, said machine; having in combination, a plurality of stations arranged in spaced relation about a circle, a plurality of work-holders similarly arranged about a circular path, means for imparting intermittent movements of rotation to the workholders to aline them successively with successive stations, andmeans for reciprocating the work-holders during the pauses between the intermittent movements of rotation, one of said stations including the support for a piece of work, means whereby the support may be adjusted along the line of reciprocation and means whereby said support may be adjusted in the general direction of the path of rotation. i

17;. A machine for covering an article, said machinehaving in combination a carrier, a plurality of work-holders supported in spaced relation by said carrier, said work-holders having means ,for engaging an article, means for clamping the mouthof a shrinkable cover to the workholder and means for trimming a shrunken cover,

a, pluralityofstations arranged in spaced relation; said. stations including a station for supporting an, article to be engaged and pickedup by relative reciprocation of the station and a work-holder which is alined with it, a placing station for supporting a hollow, shrinkable cover in position to receive an article held by a work holder upon, relative reciprocation cf the stationand awork-holderwhich is alined with it, said station including means responsive to] said rela:

tive reciprocation for causing the clamping means to clamp the mouth of a cover to a work-holder, a shrinking station including a receptacle con.- taining a-shrinking agent to the action of which a cover, containing an article, with the mouth of;

the cover clamped to a work-holder, may be subjected by relativereciprocation of the station and a work-holderwhich is alined with it and a trimming stationndapted, by relative reciprocation between it and a work-holder whichj alined with it, to cooperate with the trimming means, and means for producing relative intermittent movements between the work-holders and the mouth of a shrinkable cover to the work-holderand means for trimming a shrunken cover, a

plurality of stations arranged in spaced relation, said stations including a station for supporting an article tobe engaged and picked up by rela-' tive reciprocation of the station and a workholder which is alined with it, a placing station for supporting a hollow, shrinkable cover in position to receive an article held by a work-holder upon relative reciprocation of the station and a.

work holder which is alined with it, said station including means responsive to said relative reciprocation for causingthe clamping means to clamp 

